Clarain-rich coal
Clarain-rich coal is a specific lithotype of banded coal that combines distinctive petrographic features with important industrial properties. This article reviews what clarain is, where such coals are found and…
Coal with high vitrinite content
Coal with high vitrinite content represents a distinct and economically important category of coal whose physical and chemical characteristics influence its use across power generation, metallurgical processes, chemical conversion and…
High-volatile A coal
This article examines the properties, distribution, extraction, economic role and industrial uses of high-volatile A bituminous coal. It explains what distinguishes this rank from other coals, where significant deposits are…
Hard steam coal
Hard steam coal is a widely used category of solid fossil fuel, valued for its relatively high energy content and versatility across power generation and industrial processes. This article examines…
Sub-bituminous coal
Sub-bituminous coal is an intermediate rank of coal that bridges the gap between lignite and bituminous coal. It plays a crucial role in modern energy systems, particularly in power generation,…
Low-volatile bituminous coal
Low-volatile bituminous coal is a high-rank coal grade prized for its elevated carbon content, strong coking properties and relatively low volatile matter. This article examines its geological characteristics, global distribution,…
